نتائج البحث (13)

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  • Chemistry
Catalytic Converter
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Remix and Share
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This video lesson aims to motivate students about chemistry and to raise their awareness about how chemistry helps in solving certain environmental problems. In this lesson, the air pollution problem created by cars and other vehicles is presented. The lesson will highlight causes of this problem, harmful products from it and possible solutions. There will also be discussion of ways to convert the pollutants produced by burning oil in vehicles into more friendly products.

Subject:
Environmental Science
Chemistry
Material Type:
Lecture
Provider:
M.I.T.
Provider Set:
M.I.T. Blossoms
Author:
Prof. Mohammad El-Khateeb
Date Added:
06/11/2012
General Chemistry I
Conditions of Use:
Read the Fine Print
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This survey chemistry course is designed to introduce students to the world of chemistry. In this course, we will study chemistry from the ground up, learning the basics of the atom and its behavior. We will apply this knowledge to understand the chemical properties of matter and the changes and reactions that take place in all types of matter. Upon successful completion of this course, students will be able to: Define the general term 'chemistry.' Distinguish between the physical and chemical properties of matter. Distinguish between mixtures and pure substances. Describe the arrangement of the periodic table. Perform mathematical operations involving significant figures. Convert measurements into scientific notation. Explain the law of conservation of mass, the law of definite composition, and the law of multiple proportions. Summarize the essential points of Dalton's atomic theory. Define the term 'atom.' Describe electron configurations. Draw Lewis structures for molecules. Name ionic and covalent compounds using the rules for nomenclature of inorganic compounds. Explain the relationship between enthalpy change and a reaction's tendency to occur. (Chemistry 101; See also: Biology 105. Mechanical Engineering 004)

Subject:
Chemistry
Material Type:
Assessment
Full Course
Homework/Assignment
Lecture
Lecture Notes
Reading
Syllabus
Textbook
Provider:
The Saylor Foundation
Date Added:
11/16/2011
I Spy Nano!
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Remix and Share
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In this game, learners try to find nano-related objects on a game board. Learners investigate the different ways nano is in the world around us.

Subject:
Engineering
Education
Life Science
Mathematics
Chemistry
Physics
Material Type:
Activity/Lab
Diagram/Illustration
Game
Reading
Provider:
Nanoscience Informal Science Education
Science and Math Informal Learning Educators (SMILE)
Provider Set:
NISE Network
SMILE Pathway: Science and Math Activities in One Search
Author:
Nanoscale Informal Science Education Network
National Science Foundation
NISE Network
Date Added:
01/02/2011
النظائر والكتلة الذرّية (عربي)
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قراءة النص المطبوع بخط رفيع
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Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

الموضوع:
الكيمياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Emily Moore
John Blanco
Kathy Perkins
Kelly Lancaster
Patricia Loblein
Robert Parson
Sam Reid
Date Added:
05/13/2011
Mathematical Practice 8: Look For and Express Regularity in Repeated Reasoning
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At Inside Mathematics, we’ve assembled multiple ways for educators to begin to transform their teaching practices. You might be in search of materials and tasks you can use immediately with your students; you can search by grade level and content area below to find core mathematical principles as well as materials developed by the Mathematics Assessment Resource Service (MARS). If you want to develop your understanding of the national Common Core Standards for Mathematical Practice, you can view connections between the standards and classroom videos. Here you will be able to observe exemplar lessons in different content areas and grade levels related to MP.8

Subject:
Education
Life Science
Mathematics
Algebra
Functions
Chemistry
Material Type:
Activity/Lab
Lesson Plan
Teaching/Learning Strategy
Provider:
Maryland Public Television
Noyce Foundation
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Inside Mathematics
Author:
Individual Authors
Date Added:
11/05/2013
Reactions & Rates (AR)
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Read the Fine Print
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Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Subject:
Chemistry
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Kathy Perkins
Linda Koch
Mindy Gratny
Patricia Loblein
Ron LeMaster
Date Added:
12/02/2010
ردود فعل عكسية
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قراءة النص المطبوع بخط رفيع
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شاهد رد فعل الذي يحدث بمرور الوقت. كيف تؤثر الطاقة الإجمالية على معدل التفاعل؟ اختلاف درجة الحرارة، ارتفاع الحاجز، والطاقات المحتملة. سجل التركيزات والوقت من أجل استخراج معدل المعاملات. قم بدراسات تعتمد على درجة الحرارة لاستخراج معلمات أرينيوس. ان أفضل استخدام لهذه المحاكاة يكون مع وجود ارشادات المعلم لأنها تعرض تشابها للتفاعلات الكيميائية.

الموضوع:
الكيمياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Jack Barbera
Linda Koch
Ron LeMaster
Wendy Adams
Date Added:
09/02/2009
الأملاح والذوبان
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قراءة النص المطبوع بخط رفيع
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قم بإضافة الأملاح المختلفة للمياه، ثم شاهدها تذوب وتحقق التوازن الديناميكي مع الترسبات الصلبة. قارن عدد الأيونات في محلول لكلوريد الصوديوم العالي الذوبان مع سائر الأملاح القابلة للذوبان قليلاً. اربط الشحنات الموجودة على الأيونات مع عدد الأيونات في صيغة الملح. قم بحساب الذوبان المستمر للمنتج.

الموضوع:
الكيمياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Danielle Harlow
Kathy Perkins
Linda Koch
Patricia Loblein
Ron LeMaster
Wendy Adams
Date Added:
04/02/2010
Scientific Processes
Conditions of Use:
Read the Fine Print
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In this interactive activity adapted from NOVA, expand your understanding of the scientific process. Watch two videos featuring animations and interviews with scientists, and notice how the processes unfold and vary from one investigation to the other.

Subject:
Life Science
Chemistry
Physics
Material Type:
Activity/Lab
Interactive
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media Common Core Collection
Teachers' Domain
Author:
The Camille and Henry Dreyfus Foundation
The John D. and Catherine T. MacArthur Foundation
WGBH Educational Foundation
Date Added:
08/01/2007
Significant Figures
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قراءة النص المطبوع بخط رفيع
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Users of this interactive site can practice determining the number of significant figures in a given number. The game offers twelve different numbers for which the number of significant figures has to be determined.

الموضوع:
الكيمياء
الفيزياء
نوع المادة:
Activity/Lab
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
مركز ديلز DLESE لخدمة المجتمع (مركز الموارد لتعليم العلوم SERC)
المؤلف:
The LearningOnline Network
W. Bauer
Date Added:
11/14/2006
الطاقة المستدامة: هل يمكن للمياه أن تكون هي وقود المستقبل؟
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يمكن إعادة ترتيب المحتوى ومشاركته
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إن الهدف الرئيسي لهذا الدرس المرئي هو لفت انتباه الطلاب إلى أهمية العلوم الأساسية والطبيعية في حياتنا. وسيقوم الدرس بطرح موضوع (الطاقة المستدامة) المرتبط بشكل رئيسي بالكيمياء، والذي لا تتم تغطيته عادةً بشكل مباشر في مقررات المرحلة الثانوية. ونأمل بأن يُظهر هذا الدرس للطلاب مدى أهمية وفائدة العلوم الطبيعية والأساسية، ليس فقط من أجل حياتنا اليومية، وإنما أيضاً من أجل التنمية المستدامة. وسيعرض الدرس أفكار مبدعة وباعثة على التحدي حول موضوع الطاقات البديلة. ومن المأمول أن يحظى الطلاب بالإلهام من هذه الأفكار، ويقوموا بتنمية ثقتهم بأنفسهم ليخرجوا هم أيضاً بأفكار مبدعة. علماً بأن الخلفية لهذا الدرس مبنية على المفاهيم الأساسية في الكيمياء (بشكل رئيسي)، والأحياء، والفيزياء، والعلوم البيئية.

الموضوع:
Environmental Science
الكيمياء
نوع المادة:
Lecture
Provider:
M.I.T.
Provider Set:
M.I.T. Blossoms
المؤلف:
Ahmad Al-Ajlouni
Date Added:
05/07/2015
Understanding Science: How science really works
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The mission of Understanding Science is to provide a fun, accessible, and free resource that accurately communicates what science is and how it really works. The process of science is exciting, but standard explanations often miss its dynamic nature. Science affects us all everyday, but people often feel cut off from science. Science is an intensely human endeavor, but many portrayals gloss over the passion, curiosity, and even rivalries and pitfalls that characterize all human ventures. Understanding Science gives users an inside look at the general principles, methods, and motivations that underlie all of science. This project has at its heart a re-engagement with science that begins with teacher preparation and ends with broader public understanding. Its immediate goals are to (1) improve teacher understanding of the nature of the scientific enterprise, (2) provide resources and strategies that encourage and enable K-16 teachers to reinforce the nature of science throughout their science teaching, and (3) provide a clear and informative reference for students and the general public that accurately portrays the scientific endeavor. The Understanding Science site was produced by the UC Museum of Paleontology of the University of California at Berkeley, in collaboration with a diverse group of scientists and teachers, and was funded by the National Science Foundation1. Understanding Science was informed and initially inspired by our work on the Understanding Evolution project, which highlighted the fact that many misconceptions regarding evolution spring from misunderstandings of the nature of science. Furthermore, research indicates that students and teachers at all grade levels have inadequate understandings of the nature and process of science, which may be traced to classrooms in which science is taught as a simple, linear, and non-generative process. This false and impoverished depiction disengages students, discourages public support, and may help explain current indications that the U.S. is losing its global edge in science. Even beyond the health of the U.S. economy, the public has a genuine need to critically assess conflicting representations of scientific evidence in the media. To do this, they need to understand the strengths, limitations, and basic methods of the enterprise that has produced those claims. Understanding Science takes an important step towards meeting these needs.

Subject:
Education
Life Science
Biology
Astronomy
Chemistry
Geology
Physics
Material Type:
Activity/Lab
Diagram/Illustration
Homework/Assignment
Interactive
Lecture Notes
Lesson Plan
Reading
Teaching/Learning Strategy
Provider:
AMSER: Applied Math and Science Education Repository
Internet Scout Project
U.C. Berkeley
University Corporation for Atmospheric Research
Provider Set:
AMSER: Applied Math and Science Education Repository
Internet Scout Project
Individual Authors
DLESE Community Collection
Author:
Individual Authors
Date Added:
02/16/2011
مقياس درجة الحموضة
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قراءة النص المطبوع بخط رفيع
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قم باختبار درجة حموضة أشياء مثل القهوة, البصق، والصابون لتحديد ماهية كل منهم سواء حمضي، أساسي، أو محايد. قم بتخيل العدد النسبي لأيونات الهيدروكسيد وأيونات الهيدرونيوم في المحلول. قم بالتبديل بين مقاييس اللوغاريتمات والمقاييس الخطية. قم بالتحقيق في ما إذا كان تغيير الحجم أو التخفيف بالماء يؤثران على درجة الحموضة. أو يمكنك تصميم السائل الخاصة بك!

الموضوع:
الكيمياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Archie Paulson
Chris Malley
Jack Barbera
Kathy Perkins
Laurie Landgon
Patricia Loblein
Wendy Adams
Date Added:
07/02/2012